TSM1052

Electrical characteristics

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Electrical characteristics

Table 5.

Electrical characteristics

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

Device supply

Voltage operating range

1.7

18

V

Quiescent current

(Ictrl = Vsense = Vctr = 0,

OUT = open)

150

µA

(1)

1.

300

Voltage control loop Op-Amp

Transconductance

2.

If the voltage on Vctrl (the negative input of the amplifier) is higher than the positive amplifier input

(Vref = 1.21 V), and it is increased by 1mV, the sinking current at the output OUT will be increased by

3.5mA.

13.5

S

(1)

2.5

Vref

3.

The internal Voltage Reference is set at 1.21 V (bandgap reference). The voltage control loop precision

takes into account the cumulative effects of the internal voltage reference deviation as well as the input

offset voltage of the transconductance operational amplifier. The internal Voltage Reference is fixed by

bandgap, and trimmed to 0.5% accuracy at room temperature.

1.198

1.21

1.222

V

(1)

1.186

1.234

Ibias

Inverting input bias current

50

nA

(1)

100

Current control loop

Transconductance

4.

When the positive input at Ictrl is lower than -200mV, and the voltage is decreased by 1mV, the sinking

current at the output Out will be increased by 7mA.

1.5

7

S

(1)

Vsense

@ I(Iout) = 1 mA

5.

The internal current sense threshold is set at -200mV. The current control loop precision takes into account

the cumulative effects of the internal voltage reference deviation as well as the input offset voltage of the

transconductance operational amplifier.

196

200

204

mV

(1)

192

208

Ibias

Non-inverting input source current @

V(Ictrl) = -200 mV

20

µA

(1)

40

Output stage

100

mV

(1)

200